Wrench.



c. 'THoMg' wRENcHfv APPLICATION man SEPTA.. |914.y

s 1,14425462.I l v Patented July' 20, `1915.

fitta-vieu orrren.

Gerentes Tiroir, or Weerter, Monraua.

Wennen.

Specification of Letters Fatent.

Patented July 20,1915.

Application filed September 4, i914.` SerialiNo. 860,163.

To all 'who/ni may concern Be it known that l. (.li-innnne Trient, acitizen of. the llnited States, residing; at Washoe7 in the County ofCarbon and tate of Montana, have .invented new and useful.inproif'einents in iiirenches, of which the following isaspeciiieation.

rlhis invention relates to improvements in tools and more partieularl)7to pipe wrenches..

It is the object oit this invention to provvide a pipe Wrench witha`sliding outer aw adjustable relativehY to the carried upon the handleand slidahly conneeted thereto hy a toothed pivoted dog.

The advantages` oi 't' .is readily adjustable to pipes of dii'l'erentsizes, 'will grip the .pipe firinlju without crushing, and pipe. l

While the preferred forms or this invention are illustrated upon theaceoinpanying sheet yof drawing, vet it is to oe understood that minordetail Changes ma7 he made without departing' from the seope thereor.

Figure l. is a View in .side elevation of an enihod .lient oi: thislinvention a uit to he adjusu to engage gi pipe. in 1 a sinular vieu',with parts iiroli'en away. `n'ipping a pipe. a vieu' similar to Fig?. 1of Fin. is

c vv .I a niodineation. r le'. il is a vieu' simular to 1 .Fig Q of thisinodiiipfation.

In carryingy out this invention, as illustrated in Figs. l and the innerjew l is Acarried upon the outer end ot the handle 2.

The outer jan' is carried upon a shank l which is provided upon itsund-er side with. a plurality of teeth 5, the forward edges of which areperpendicular to the shank and' the rear edges inclined. The shank l ismounted to slide in the closed upi'wr portion ol. -a housing' (S whichis open at the bottoni` and Whose sides 'enihraie 'the .einen ot thehandle 2 and is iiaivotnhly soeur-ed to the handle a holt H and. hanreat a point below and te the rear ot the ceiuer ot the housingQ sides.

tion orf-the handle within Luo hous- :ind adjacent the jaw l is provideda curved cut-out portion S within which osoillates a toothed doe; Yabout a pivot upon the handle at the i'or.4 fl portion oi: the. dog. Theupper portion ot' the dog is curved and provided willi a plurality ofteeth l0 adapted to engage the teeth oi the shank. The teeth or the dogare normallyA x held in engagement with the simpl;

nis Wrench are that it idily detachable troni the i passingr throi-in'hthe Sides strap ll passing over the top of the housing' and along eachside having' a` pin 12 passing through apertures lin 'the sides of thehousing and through the dog' 9. which strap are arranged on a curveeccentric to 'rts'pivot point, the spring pressed strap vill normallyretain the teeth upon its Surface `furthest from its pivot point inengagement w ith the shank. ln the form shown on Figs. l and 2. the dog9 is pivoted to the handle hy a projection lf3 tlierefroi'n entering acentral cutout in the upper side of the handle and the teeth 5 on theshank l are arranged in. a .straight line. I

In the modification illustrated upon Figs. El and l the dog 9 extension16 from the handle extending within cutouts 1.7 upon the dog teeth 5. ofthe shank 4P' are arranged upon a curve so that even in the closedposition o the outer jaw the teeth on the curved upper surface of thedog will engage the shank. The outer jaiv isreadilyl adjustable by handas an inward manual movement will and 'while the outer jaw is held inengage nient 'with the pipe the inner iavv in brought in Contact withthe inner side of the pipe by 'forcing the haiulle in its direction, theshank sliding over the spring controlled dog, and thepipe in firmlygripped by bearing down on ilu handle which will exert av downward pullupon the housing pivot and cause an A upon 4doivnq` Ward infessure onthe handle and as its teeth is pivoted upon a rigid and the raisedreleasing the spring' controlled doggl upward movementl of the inner jawwhich causes an eccentric rearward movement of the dog in relation tothe housing pivot that will Withdraw the outer jaw to iirmly grip thepipe against the inner By the forL mation of the dog With the teeth nthe curved upper surface it will'v always engage the shank and While thepressure exerted upon the pipe will be great enough to grip it firmlythe pressure created by the bearing down upon the handle is not atanytime great enough to erush the pipe.

hat l claim 1s:-

A Wrench Comprising a handle, a iiXed jaw thereon`r a housing pivoted tothe handle below and te one side of the center of the housing. a movableJaw, a shank thereon guided between the housing and handle, a

plurality oi teeth upon the side of the shank shank, said pivot pinapertures in the housb ing sides provided with rentrant projectionsadapted to engage the strap pivot pin to limit the movement of thehousing about its handle pivot.

CHARLES THQM. ,lNitnesses THAD C. POUND, BERNARD H. vh/IoGrUnm.

epes ef this patent may be ohtained for ive cents each, by addressingthe Clommissioner of Patents.

Washington, D. C. l

